Multi Agent Based Multi Fault Recovery Strategy For Two-Stage Electricity Gas Integrated Energy System

In recent years,as the representative of renewable energy,natural gas is favored by all countries in the world,and more and more gas-fired generating units are put into use,so the electricity gas integrated energy system emerges as the times require.There is a high degree of coupling between the power network and the natural gas network.When the power system or the natural gas system fails,the fault can conduct and penetrate between the two systems.If multiple faults are not recovered in time,the system will collapse completely.Therefore,this paper studies the problem of emergency repair and recovery after multiple failures of electric gas integrated energy systemFirstly,this paper analyzes the research status of fault repair and recovery of traditional power system and electricity gas integrated energy system,studies the composition of electricity gas integrated energy system,its internal coupling relationship and the characteristics after fault,then analyzes the principle of depth first search and breadth first search algorithm,and studies the traditional distribution network power flow algorithm with distributed generation,It lays a theoretical foundation for the future research.Secondly,considering the coupling operation of power system and natural gas system,a two-stage recovery strategy is proposed.In the emergency recovery stage,priority is given to restoring the load energy supply and repairing part of the fault equipment,and the remaining fault equipment is repaired in the comprehensive recovery stage.The piecewise linearization method is used to deal with the model,and the optimal topology recovery sequence in the process of fault recovery is obtained,so as to minimize the economic loss in the process of recovery,and the optimal recovery scheme is given.Finally,considering the clustering of multi fault points and the allocation and coordination of repair personnel,a multi-agent personnel deployment based multi fault repair and recovery model is established.Firstly,the regions of multiple failure points are divided,and then the multi-agent rush repair personnel allocation scheduling problem is considered to optimize the recovery problem of the electric gas integrated energy system,so that the economic loss of the electric gas integrated energy system during the rush repair and recovery process can be minimized,and the post failure recovery scheme is formed,Simulation results show the effectiveness of the proposed strategy.